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Posted to issues@spark.apache.org by "Gengliang Wang (JIRA)" <ji...@apache.org> on 2018/09/01 16:44:00 UTC

[jira] [Updated] (SPARK-25305) Respect attribute name in `CollapseProject` and `ColumnPruning`

     [ https://issues.apache.org/jira/browse/SPARK-25305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Gengliang Wang updated SPARK-25305:
-----------------------------------
    Summary: Respect attribute name in `CollapseProject` and `ColumnPruning`  (was: Respect attribute name in `CollapseProject`)

> Respect attribute name in `CollapseProject` and `ColumnPruning`
> ---------------------------------------------------------------
>
>                 Key: SPARK-25305
>                 URL: https://issues.apache.org/jira/browse/SPARK-25305
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 2.4.0
>            Reporter: Gengliang Wang
>            Priority: Major
>
> Currently in optimizer rule `CollapseProject`, the lower level project is collapsed into upper level, but the naming of alias in lower level is propagated in upper level.
> We should reserve all the output names in upper level.
> See PR description of https://github.com/apache/spark/pull/22311 for details.



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